Fluor plastic lining valves including ball valve ，dump valve ，dump valve ，globe valve and diaphragm valve etc. The shell casting is from the precision casting method to make sure the glabrous appearance and the strong intension. Fluor plastic lining is adopted at the joint with corrosive medium. Products could work well in acid ， alkali and salt environment . The work temperature is between -60℃~180℃. The characteristic are opening and closing fast ，little flow resistance and without seepage.